Bunch of ******

Was with cell c for my modem+data for two years. Contract expired so went to open a new one on 20th June for data only since I still have the old modem. So I get home n canceled the old sim card n try to use the new n th modem died. So on the 22 I went back to the store n asked to add a modem to the new contract which the gentleman assists with n gives me a new sim saying he'll cancel the one I took on the 20th...on the 27th July I get debitted almost 3 times what was supposed to be n had to reverse the debit. N they managed to debit again on the 15th August. Now i call them on the same day to get the story that part of the debit cards was for old sim that I cancelled, and I happen to hav 2 contracts that r running n apparently because it was the store agent who was supposed to cancel the 1st sim he gav me now I must go back to the store. Now back to today 17th Aug I call them to reinstate my data n they tell me I've over used the data. How is that possible when m line was off the whole time. I feel cell c's incompetency is a huge inconvenience. I want everything to be cancelled and I don't want anything to do with this company ever again.